Units of dynamic range

Started 3 months ago | Discussions thread
ForumParentFirstPrevious
Flat view
TN Args
TN Args Veteran Member • Posts: 6,788
Units of dynamic range
2

Hi everyone, I would like to get some clarification please.

I have seen dynamic range described using various units, as a number of EV, stops, dB, bits.

Firstly, are all those units legitimate units of dynamic range?

Also, are there any conversion factors?

  • 12 EV of dynamic range
  • 12 stops of dynamic range
  • 12 dB of dynamic range
  • 12 bits of dynamic range
  • 12=12=12=12?

Finally, does the appropriate unit vary with what is being measured?

  • the live scene in front of me has 12 (unit) of dynamic range
  • the sensor has 12 (unit) of dynamic range
  • the image has 12 (unit) of dynamic range
  • the PC monitor has 12 (unit) of dynamic range

As an aside, some PC monitors or video projectors seem to use a contrast ratio (like 5000:1) when they are describing what I would call the dynamic range. Can one convert from contrast ratio to EV / stops / dB / bits?

Thanks for any responses.

 TN Args's gear list:TN Args's gear list
Sigma dp0 Quattro Panasonic Lumix DMC-GX7 Olympus E-M5 II Olympus M.Zuiko Digital ED 9-18mm F4.0-5.6 Panasonic Lumix G 14mm F2.5 ASPH +7 more
ForumParentFirstPrevious
Flat view
Post (hide subjects) Posted by
(unknown member)
ForumParentFirstPrevious
Keyboard shortcuts:
FForum PPrevious NNext WNext unread UUpvote SSubscribe RReply QQuote BBookmark MMy threads
Color scheme? Blue / Yellow